Cushman 6" 4 Jaw Chuck Value

[bama7]

I am not sure where to post this, but if needed please move to the proper place. I purchased a Logan 1825 a few days ago and it had a Cushman 4 jaw chuck and a 3 jaw chuck. I am not sure if I will use it as of yet. I am not a machinist, I am a tinkerer. I would like to reclaim some money if possible so I would like to know the ballpark figure for what it is worth. The jaws move very smooth and nothing is chipped or dented. Any help would be greatly appreciated.

 

[JimDawson]

Seems to me that selling the chucks would be counter productive. It would severely limit the usefulness of the lathe. Why not just sell the whole machine if you don't plan on using it. Just post it in the For Sale forum. http://www.hobby-machinist.com/foru...want-to-sell-or-trade-for-active-members.211/

 

[John Hasler]

If you are only going to keep one chuck (I'd keep both) I suggest selling the three. The four can do most of what the three can but the three can't do most of what the four can.

 

[bama7]

I plan to learn to use this lathe and have no desire to sell it. I don't even know what one chuck does better than the other. I read what I can when I can. If the 4 jaw does things I would not have any need to do then why would I keep it? Just checking.

 

[John Hasler]

The four jaw chuck can grip things that are not round because each jaw can be adjusted seperately.

 

[bama7]

The four jaw chuck can grip things that are not round because each jaw can be adjusted seperately.

Now that makes since to me. I can see where that would be rather handy. Thank you

 

[Kernbigo]

you may as well sell the lathe if you sell either one

 

[bjornsh67]

Hi,

You should keep both.

The 4 jaw chuck is valuable when you need to centre your workpiece. As mentioned, the 4 jaw is good to grip irregular shaped workpiece and you can basically centre any feature.

The 4 jaw chuck is the chuck you use when you don't have 5c collets or any similar work holders for high precission work.

Bjør

 

[kd4gij]

Lets see with a 4 jaw chuck you can make a square peg fit a round hole. Another way to look at it is, a 3 jaw is for speed a 4 jaw is for accuracy.

 

[tomh]

+ 1 on keeping the 4 jaw
When people go to school to learn to be a machinist the 4 jaw is the first chuck you learn to use. Many people get so comfortable with the versatility of it it becomes there go to chuck. If I only had one chuck it would be a 4 jaw.
Tomh